Unfortunately, conventional controller technology does not allow a solar panel to operate at it’s maximum power point voltage. The battery bank acts as a load on the panel, depressing the panel’s output. The Solar Boost series of controllers, however, employ Maximum Power Point Tracking (MPPT). In essence, the Solar Boosttm converts this lost voltage into additional charging current. Gains in efficiency are greatest in cold temperatures and when the battery bank is at a low state of charge. For this reason, the Solar Boosttm is ideal for winter charging in cold climates. This can result in an additional current output
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